(adj.) costs a lot of money|(v) to exchange one thing for another|(n) money that people earn by working|(n) system of money|(n) a long thin piece of cord or thread which we use to tie things together|(n) cows that farmers raise|(v) to exchange things or services for others of the same value|(v) to make a living by growing food or raising animals|(n) a hard element from nature|(n) a very valuable yellow metal|(n) a strong material made from animal skin|(n) a container made of glass or porcelain, often used to put flowers in|(n) a valuable, bright, light grey metal